Trapping and Driving Individual Charged Micro-particles in Fluid with an Electrostatic Device

作     者：Jingjing Xu Zijing Lei Jingkun Guo Jie Huang Wei Wang Uta Reibetanz Shengyong Xu 

作者机构：Key Laboratory for the Physics & Chemistry of Nanodevicesand Department of Electronics Peking University Institute of Microelectronics Peking University Medical Faculty Institute for Medical Physics and Biophysics University of Leipzig 

出 版 物：《Nano-Micro Letters》 (纳微快报（英文版）)

年 卷 期：2016年第8卷第3期

页      面：270-281页

核心收录：

学科分类：0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：financially supported by National Natural Science Foundation of China (NSFC Grants No.11374016) MOST of China (Grant 2012CB932702, 2011CB933002) 

主　　题：Electrostatic tweezers Charged particles Coulomb potential well Manipulation Trap 

摘      要：A variety of micro-tweezers techniques, such as optical tweezers, magnetic tweezers, and dielectrophoresis technique, have been applied intensively in precise characterization of micro/nanoparticles and bio-molecules. They have contributed remarkably in better understanding of working mechanisms of individual sub-cell organelles, proteins, and DNA. In this paper, we present a controllable electrostatic device embedded in a microchannel, which is capable of driving,trapping, and releasing charged micro-particles suspended in microfluid, demonstrating the basic concepts of electrostatic tweezers. Such a device is scalable to smaller size and offers an alternative to currently used micro-tweezers for application in sorting, selecting, manipulating, and analyzing individual micro/nanoparticles. Furthermore, the system offers the potential in being combined with dielectrophoresis and other techniques to create hybrid micro-manipulation systems.